'''SGS''' may refer to :
* SGS S.A.
(formerly Société Générale de Surveillance), a Swiss company providing inspection, verification, testing and certification services
* Shadow Government Statistics
, a website and economic consulting firm run by economist John Williams
* ''Società Generale Semiconduttori - Aquila Tubi E Semiconduttori'' (SGS-ATES, "Semiconductor General Society - Tubes and Semiconductors Aquila"), later ''SGS Microelettronica'', a former Italian company now merged into STMicroelectronics
* South Georgia and the South Sandwich Islands
: ISO 3166 trigram
* South Georgia Survey
, four expeditions (1951–1957) led by V. Duncan Carse which mapped the South Georgia Antarctic archipelago
* Strong generating set
, a concept in the group theory of mathematics
* Sisters of the Good Samaritan
* Search Guard Successor Foundation
, a fictional organization in the Japanese Super Sentai show ''GoGo Sentai Boukenger''